Metallic door.



' mM. SINCLAIR. METALLIC DooR.

APPLICATION FILED APR. 1, 1911. 1,025,023. Patented Apr. 30, 1912. s SHEETS-SHEET 1.

l iv? fla -z 5 z -rz *l5-v l J l ,1 1 Lw j 1Q 1'7 7 *a l. i O I z l 1 6 I5 M'le/se l ZzVe/Z/'q'r: Q@ QQHK, 1l '47 f? a gall/:guez fg f Q/ G. M. SINCLAIR.

METALLIC DOOR. APPLICATION FILED APR. 1, 1911.

Patented Apr. 30, 1912.

3 SHEETS-SHEET 2.

C. M. SINCLAIR.

METALLIC DOOR. APPLICATION FILED A PBJ, 1911.

Patented Apr. 30, 1912.

3 SHEETS-SHEET 3.

Mariam (2H-ARLES M. SINCLAIB, 0F CHICAGO, ILLINOIS. I

METALLIC DOOR.

Specification of Letters Patent.

Patented Apr. 30,1912.

Application led April 1, 1911. Serial No. 618,380.

To all whom t may concern Beit known that I, CHARLES M. SINCLAIR, Y

a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Metallic Doors, of which the following is a specification.

My invention relates to metallic doors and has forits object the production of a door of this character which will'be of such improved construction as to permit of ready and expeditious assemblage of the parts and without the use of nails, screws, rivets, or other similar securing devices such as are now generally employed in doors of this character. 4

A further object is the production of a door as mentioned which will be of durable and economical construct-ion and eflicient in use.

Other objects will appear hereinafter.

With these objects in View, my invention consists in a metallic door characterized as above mentioned and in certain details of construction and arrangements of parts all as will be hereinafter more fully described and particularly pointed out in the ap pended claims.

My invention will be more readily understood by reference to the accompanying drawings forming a part of this specification, and in which,

Figure 1 is a front view of a door embodying my invention, Fig. 2 is an enlarged transverse section taken on line 1li-w of Fig. 1, Figs. 3, 4 and 5 are enlarged sect-ions taken on line 'j-/yand a-'z respectively of Fig. 1, Fig. 6 is a front view of the structural parts of the door partly assembled, Fig. 7 is an enlarged perspective View of one of the angular locking strips detached, and Fig. 8 is an enlarged perspective view of one of the molding securing strips.

The preferred form of my door as illustrated in the drawings comprises the Stiles l, the upper and lower and intermediate rails 2, 3 and 4 respectively and the intermediate panels 5, these parts being arranged as will be observed in the usual manner. Each of the stiles 1 is formedof a single piece of sheet metal, the longitudinal edges of the sheet being brought together atthe inner edge of the stile so as to form a longitudinally extending opening in said edge, said edges of said sheet terminating ininwardly turned inwardly divergent flanges 6, as clearly shown in Figs. 2 and 5. -Each of the rails 2, 3 and 4 is open at its lateral edges, outwardly projecting outwardly divergent -channel flanges 7 being formed thereon for engagement with the flanges 6 of the stiles 1, the adjacent edges of said rails and stiles being positioned in engagement with each other when said flanges are interlocked. The panels 5 are each formed of two flat metallic sheets 8 which are spaced apart slightly, the lateral edges 9 of said sheets 8 being ared outwardly, for engagement against the flanges 6 of the stiles 1, as clearly shown in'Fig. 5. Thus it will be observed that the lateral edges of the rails and panels are formed for engagement with the flanges 6 of the st-iles 1, the arrangement being such that in constructing the door said rails and panels may be slid to proper position between the stiles from one or both ends of the latter, as shown in Fig. 6.

In order to reinforce the st-ructure at the lines of connection of the panels and rails with the st-iles, locking strips 10 are provided. Said strips 10 are angular in cross section to correspond with the disposition ofthe flanges 6, 7 and 9, the longitudinal edges of said strips 10 being formed into channels l1 which embrace the ianges 7 and 9 as clearly illust-rated in Figs. 2 and 5 respectively. The construction is such that, after arrangement of the rails and panels between the Stiles, said strips 10 may be slid to operative position and engagementwith the interlocking flanges of said st-iles and rails and panels. One strip 10 only is employed in each stile, said strip being co-extensive in length with said stile. Intermediate its longitudinal edges each strip 10 is formed with a medial longitudinally extending channel 12 which opens into the interior of the ad-v jacent stile. `The channels 12 are provided for the reception of corresponding edges of insulation sheets 13 which are arranged in the stiles. The sheets 13, which are preferably although not necessarily formed of asbestos, are transversely iexed into position the outer edges thereof resting in correspending corners of said stiles, as shown in Fig. 5, thereby maintaining said sheets securely in position so as to prevent rattling when the door is in use.

The inner transverse or horizontal edges of the rails 2 and 3 and both of the transverse and horizontal edges of the rail 4 are open and formed with inwardly turned inwardly divergent flanges 14, as clearly shown in Fig. 3. Said flanges 14 are reinforced in the same manner as the vertical flanges of said rails, before described, by locking strips 10, the channeled edges 11 of said strip 10 embracing the inner edge portions of said flanges 14. The transverse or horizontal edges of the channel sheets 8 are not provided with flaring engaging flanges at the vertical edges thereof, the former being left straight and coplanar with the bodies of said sheets 8 in order that the same may be slid to engagement against the respective sides of the channels 12 of the j transversely extending locking strips 14. lt

is understood that the respective extremities of the rails will be cut away sufficiently to permit of ready passage of the locking strips for sliding the same into engagement with the lflanges 14. Arranged in each of the rails and panels is a sheet 13 of insulation, asbestos being preferably used for this purpose. rlhe insulation sheets 13 which are arranged in the rails are held in position by the channels 12 of the transverse locking strips 14, the insulation sheets arranged in the panels being of such thickness as to be snugly received between the panel sheets 8 and thereby held securely in position by the.

latter.

Arranged at the lines of intersection of the stiles and rails with the panels are molding strips 15. Said molding strips are of any desired transverse form, the same being provided atvtheir outer edges with i11- wardly extending angularly disposed flanges 1G. Securing of said molding strips in position is effected through the medium of securing strips 17. The strips 17 are angular in cross section the inner edge portions 18 thereof beinfr channel formed, as clearly illustrated in Fig. 8 for engagement between the channel edges 11 of the locking strips 10 and the engaging flanges vof the Stiles, rails or panels as the case may be. The outer edge portions 19 of the strips 17 are outwardly turned and angularly disposed for forcible engagement with the flanges 16 of the molding strips 15. By reason of the angular disposition of said flanges 1G and because of the resiliency of the edges 1S) said molding strips 15 will evidently be securely held in position, arrangement of said molding strips in position bein effected by springing the same into position, the extreme outer edge portions of the enwith the gaging portions 19 being bent upwardly, as illustrated, in order to facilitate application of said molding strips.

In assembling the parts of the door thel stiles 1 are first arranged in proper relative position. The intermediate rail 4 bearing the molding securing strips 17 at its transverse or horizontal edges and the insulation sheet 13 positioned within is then slid toposition between said stiles. The anels 5 bearing the molding engaging 'strips 17 at their lateral edges and the insulation sheets 13 positioned within, that is between the sheets 8 is then slid to position against the upper and lower sides of said rail 4; whereupon the rails 2` and 3 bearing engaging strips 17 at their inner transverse edges and the insulation sheets properly positioned within is slid to position between the stiles into close engagement with the adjacent edges of the panels. When thus arranged the transverse edges of the sheets 8 of the panels 5 will be positioned between the respective sides of the channels 12 of the locking strips 10 of the rails and the adjacent portions of the molding securing strips 17 as clearly shown in Fig. 3, thereby securely maintaining said edges of said panel sheets in proper position. rlhe vertical locking strips 10 are now slid to position within the stiles 1 in to engagement lateral outwardly projecting Hanges of the rails and panels, whereupon the insulation sheets 13 are slid to position within said stiles. The extremities of the stiles are then closed by plates 20 which are secured into position in any suitable manner but preferably by soldering or welding the peripheral edges thereof with the adjacent edges of said stiles. The plates 20 as will be observed serve to lock the rails and panels in position between the stiles preventing longitudinal movement thereof between the latter, said plates also serving to lock the lookin strips 10 of the stiles and also the insulation sheets 13 against longitudinal movement within said stiles. The molding strips 15 are next applied, this being done by forcing the flanges 16 thereof into position under the engaging edge portions 19 of the stri s 17. The door thus completed may be nished by applying paint, enamel or other suitable covering.

From the above description it will be seenv that a door is provided which in the construction thereof no nails, screws, or rivets are used. Although such securing devices are not used a door of great durability and strength is produced, the avoidance of securing devices resulting in a construction of great economy in manufacture. 'lhe provision of the angular locking strips at all of the joints in the door results in a struc-I ture of great strength at the joints thereby preventing warping or otherA distortion although the door may be subjected to various atmosphere conditions.

While I have illustrated and described Vthe preferred construction vfor carrying my claim as new and desire to secure by Let z ters Patent is: l

l. In a metallic door, a hollow stile having flanges turned within the hollow of the stile and diverging, a panel havingv flanges extending within the stile and turned upon an angle corresponding to the angle of the flange of the stile, a mold positioned upon the panel, a securing strip engaging the mold and bentat an angle to correspond with the angle of the flanges of the panel and stile and located between such flanges and a securing strip having panels proportioned to embrace the adjacent ends of the flanges of the panel and the stile and the securing strip.

2. In a metallic door, a hollow stile having tlanges'turned within the h ollow of the stile anddiverging and spaced apart, panels spaced apart and having flanges extending within the hollow of the stiles and turned at angles co-rresponding to the angles of the .di--

verging flanges of the stile, and a clamping strip having a channel proportioned to be seated between the panels, and other diverging channels proportioned to engage the adjacent edges of the flanges of the panel and the stile, and an insulating sheet positioned within the stile and engaging within the spacing channel.

3. In a metallic door, a stile having flanges turned within the hollow of the stile, and diverging, such flanges being spaced apart to produce an opening, panels spacedapart and having `flanges extending within the stiles and turned at angles corresponding to the angles of the diverging flanges of the stile, a clamping strip providing a channel interposed between the panels and with,

diverging channels embracing and lockingl the flanges of the panel and the stile, and a rail having outwardly turned flanges diverging to correspond with and located within the stile, such flanges being also' engaged by the clamping strip extending over such flanges and the flanges of the stile.

4. In a metallic door, a hollow stile having flanges turned inwardly and diverging, providing a space between such diverging flanges, spaced panels having their edges insertedL through such space and `turned out-y wardly to form diverging flanges corresponding to the angle of the diverging flanges of the stile, molds disposedl upon the panels, securing strips engaging-the molds and turned inwardly between the anges of the panel and the flange of the stile, a rail having outwardly turned flanges within the stile and-corresponding to the angleof the flange of the stile, and a; clamping strip engaged over the, adjacent ends of the flanges of the stile and rail and over the adjacent ends-of the flanges of the ,panel and stile and the interlying securing strip.- v

5. In a metallicV door, a hollow stilehaving flanges turned within the hollow of such stile and. diverging producing a space, spaced panels inserted through the space of the stile and having their edges turned outa wardly to form flanges diverging to correspond to Athe-flanges ofthe stile, molds located upon the panels, securing strips engaging the molds and having their ends turned inwardly between the flanges of the panel andthe flange' of the stile and turned over the latter as achannel, a rail having outwardly turned diverging flanges inserted through the. opening in the stile with the -flanges adjacent, and a clamping strip having a channel portion interposed between the spaced panels -and within the rail and with diverging panel portions embracing the adjacent flanges of the rail and stile and the adjacent flanges ofthe panel, stile and interlying securing. strip.

6. In a metallic door, a hollow stile having flanges turned vwithin the hollow of the .stile and diverging, a panel lhaving flanges extending'within the stile and turned upon an angle corresponding to and in juxtaposition with the flanges of the stile, and 'a securing strip having channel 'portions proportioned to embrace the adjacent ends of the flanges of thepanel and the stile.

7, In a metallic door, a hollow stile having flanges turned within the hollow of the stile and diverging, spaced panels having outwardly turned `flanges extending within the stile and in juxtaposition tol the flanges of the stile,and a securing strip having a channel positioned between the panels and other channels disposed at angles to the first mentioned channels and embracing the adjacent ends of the flanges ofthe panels and of the stile.

8. In a metallic door,.a hollow stile having'flanges turned within the hollow of the stile and diverging',` a panel having flanges extending within the stile and turned upon an angle corresponding to the angle of the stile, a rail having -at its ends youtwardlyv turned flanges extending within the stile and corresponding to the angle of the flanges 4. nomme rail being disposed in juxtaposition to the name to this specification in the presence of dvergng 1Eflenges of the sltile, and seflzurtwo subscribing Witnesses. ing stri avn an ulm' spose c annels em racinggthe gadjacent .ends of the f CHARLES M SNCLAIR 5 anges of the panel and stile and the mil Witnesses:

and stile. HELEN F. LILLIs,

In testimony whereof l have signed my JOSHUA R. H. Po'r'rs. 

